Treatment of Yellow Phosphorus Slag and Reuse of It as an Absorbent of Chromium (VI) Ions and Methylene Blue

Table 9

Effect of pH on methylene blue adsorption process.

No.	Mass (g)	Time (min)	pH	Q (mg·g^−1)	H (%)
2	0.4	120	3	2.455	98.20
3	0.4	120	4	2.434	97.35
4	0.4	120	5	2.350	94.02
5	0.4	120	6	2.403	96.11
6	0.4	120	7	2.441